Searching for samples is pretty easy in Loopcloud, since I would be creating progressive house music, I'll be searching for anything related to that niche, so, I'll be starting with a loop.
For example, to find a progressive house loop, I'll go to GENRE, select Progressive House, choose WAV as my default format (this way, you would be recommended HQ samples), and find my preferred loop, e.g "Percussion Loop"